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Measurement of the CP-violating phase [phi]s and the B0s meson decay width difference with B0s  → J/[psi][phi] decays in ATLAS

A measurement of the B 0 s decay parameters in the B 0 s  → J/ψϕ channel using an integrated luminosity of 14.3 fb−1 collected by the ATLAS detector from 8 TeV pp collisions at the LHC is presented. The measured parameters include the CP -violating phase ϕ s , the decay width Γ s and the width diffe...

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Main Authors: Aad, Georges (Author) , Anders, Christoph (Author) , Andrei, George Victor (Author) , Baas, Alessandra Edda (Author) , Brandt, Oleg (Author) , Davygora, Yuriy (Author) , Djuvsland, Julia Isabell (Author) , Dunford, Monica (Author) , Geisler, Manuel Patrice (Author) , Giulini, Maddalena (Author) , Hanke, Paul (Author) , Jongmanns, Jan (Author) , Kluge, Eike-Erik (Author) , Kretz, Moritz (Author) , Kugel, Andreas (Author) , Lang, Valerie (Author) , Lisovyi, Mykhailo (Author) , Meier, Karlheinz (Author) , Schätzel, Sebastian (Author) , Scharf, Veit (Author) , Schmitt, Sebastian (Author) , Schöning, André (Author) , Schultz-Coulon, Hans-Christian (Author) , Sosa Corral, David E. (Author) , Stamen, Rainer (Author) , Wessels, Martin (Author)
Corporate Author: ATLAS Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 24 August 2016
In: Journal of high energy physics
Year: 2016, Issue: 8
ISSN:1029-8479
DOI:10.1007/JHEP08(2016)147
Online Access:Verlag, Volltext: https://doi.org/10.1007/JHEP08(2016)147
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Author Notes:The ATLAS collaboration*
Description
Summary:A measurement of the B 0 s decay parameters in the B 0 s  → J/ψϕ channel using an integrated luminosity of 14.3 fb−1 collected by the ATLAS detector from 8 TeV pp collisions at the LHC is presented. The measured parameters include the CP -violating phase ϕ s , the decay width Γ s and the width difference between the mass eigenstates ΔΓ s . The values measured for the physical parameters are statistically combined with those from 4.9 fb−1 of 7 TeV data, leading to the following: ϕs=−0.090±0.078(stat.)±0.041(syst.)rad, ΔΓs=0.085±0.011(stat.)±0.007(syst.)ps−1, Γs=0.675±0.003(stat.)±0.003(syst.)ps−1. In the analysis the parameter ΔΓ s is constrained to be positive. Results for ϕ s and ΔΓ s are also presented as 68% and 95% likelihood contours in the ϕ s -ΔΓ s plane. Also measured in this decay channel are the transversity amplitudes and corresponding strong phases. All measurements are in agreement with the Standard Model predictions.
Item Description:Im Titel ist die Zahl "0" hochgestellt
Im Titel ist der Buchstabe "s" tiefgestellt
Im Titel sind "psi" und "phi" als griechische Buchstabe dargestellt
*The ATLAS collaboration: G. Aad, C.F. Anders, V. Andrei, A.E. Baas, O. Brandt, Y. Davygora, J.I. Djuvsland, M. Dunford, M.P. Geisler, M. Giulini, P. Hanke. J. Jongmanns, E.-E. Kluge, M. Kretz, A. Kugel, V.S. Lang, M. Lisovyi, K. Meier, S. Schaetzel, V. Scharf, S. Schmitt, A. Schoening, H.-C. Schultz-Coulon, D. Sosa, R. Stamen, M. Wessels [und sehr viele weitere Personen]
Gesehen am 29.06.2020
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP08(2016)147

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